We are excited to announce that the Public Preview of the new Message Trace in the Exchange admin center (EAC) in Exchange Online.

We wanted to provide an update on deprecation of Client Access Rules (CARs) in Exchange Online.

We wanted to provide an update on servicing Exchange Server 2019.

A significant update was posted related to Nested App Authentication and deprecation of Exchange Online legacy tokens.

Today we are re-releasing the November 2024 SUs for Exchange Server.

We are pleased to provide an update regarding Exchange Server ADFS Modern Authentication support.

Please read about important updates about recent changes and upcoming deprecations in Exchange Online.

We wanted to share an update on the ApplicationImpersonation RBAC Role Deprecation in Exchange Online.

We have released Security Updates for Exchange Server 2016 and Exchange Server 2019.

We are announcing a feature that allows admins to add protection against accidental delicensing of Exchange Online mailboxes.